Metal-shearing machine.



Patented Dec. |0,-l90|. S.- MAHAN.

METAL SHERING MAC-Hl-NE.

(Application led Mm'. 25, 1901.) I

2 Sheets--Sheei l.

(No Modl.)

wir mme@ nu. 688,535. .Patented nec. lo, |901.

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METAL SHEARING MACHINE.

2 Sheets---ShetV 2.

(Application `1ed Mar. 25, 1901.)

" (No Model.)

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sPENoER MAHAN, on ELwooD, INDIANA.

METAL-SHEARING- MACHINE.

SPEGIFGAEION forming part of Letters Patent No. 688,535, dated December10, 1901.

Application tiled March25,` 19017. Serial No. 52,834. (No model.)

To all whom, t may concern: f

Be it known that I, SPENCER MAHAN, a citizen of the United States,residing at Elwood, in the county of Madison and State of Indiana, haveinvented new and useful Iniprovements in Metal-shearing Machines, ofwhichY the following is a specification. v

This invention relates to certain new and useful improvements inattachments for metalshearing machines, and has forits object,

among others, to provide a vertically-adjustable roll, a novel tableattachment, and an endless carrier for conducting away the trimmingsfrom the sheared iron, which are deposited upon the carrier by an apron,which receives and discharges the trimmings.

I aim further at improvements in the details of construction wherebyacheaper, simpler, and more satisfactory device is provided.

The invention in the present instance resides in the peculiarconstruction, combination, and arrangement of parts, all as moreparticularly hereinafter described and then pointed out in the claims.

The invention is clearly illustrated in the accompanying drawings,which, with the numerals of reference marked thereon, form a part ofthis specication, and in which- Figure 1 is a rear elevation showing myimprovement. Fig. 2 is a substantially central vertical section throughthe samejfrom front to rear. Fig. 3 is avertical section on the line 3 3of Fig. 2. Fig. 4 is a horizontal section on the line 4 4 of Fig. v2looking in the direction of the arrow. Fig. v5 isadetail moreparticularly hereinafter referred to. l

Like numerals of reference indicate like parts throughout the severalviews.

Referring now to the drawings, 1 designates the base, and 2 theuprights, of 'the machine, which, except as hereinafter specified, maybe of any well-known or approved form of construction.

3 isa metallic roll mounted upon a shaft 4 and journaled in suitablebearings or boxes 5, as seen clearly in Figs. 1 and 3, the ends of thesaid shaft or the pintles or spindles of the roller being designed tohave sufficient play vertically in the slots '6 of the upright castings2 to permit of leveling of the roll when desired. Set-screws 7 providefor the removal of the roll when desired. Set-screws or analogousdevices 8 allow for vthe adjustment of the roll lengthwise of its shaftwhen occasion requires. This roll is designed to be continuouslyrevolved by means of a belt (not shown) running over a pulley 9 on theeX- tended end of the shaft, as seen in Figs. l and 3, and on thisextended end is a grooved pulley 10 for aV purpose which will behereinafter set forth. The belt designed to impart continuous rotationto the roll 3 is, it will be readily understood, designed to be operatedfrom the main shaft of the machinery or from any other suitable source;but as this constitutes no part of the invention it has not'been deemednecessary to illustrate the same.

11 designates the lower roll, of metal, and preferably, like the upperroll, formed hollow, as seen clearly in Fig. 2, although it is evidentthat this is not essential. This shaft Al2 is mounted to. revolve insuitable bearings in a frame or carrier 13 and is designed to havevertical play in,sl ots ,14 in said frame, as seen clearly in Fig. 3. Itis designed to be moved vertically by means of the foot of the operatorplaced upon the treadle 15, pivotally mounted, as at 16, in bearings 17on the castings of the shears, the inner end of said teadle engaging atransverse rod or shaft 18, and this rod or shaft 18 is designed toactuate the vertical slides 19 to raise the roll, the connection betweenthe said treadle and the slides being a knuckle-joint, as seen at 20 inFigs. 1 and 2, the pivotal connection 21 with the knuckle being at thelower end of the slides. InFig. 5 I have illustrated in detail a portionof this'knuckle-joint connection, in which the openings 22 (indicated bydotted lines)'a1e'forthe reception of the pivot 2l, as will-be readilyunderstood. It will thus be seen that when'the operator places his footupon the treadle the slides 19 will by reason of the connection justdescribed be forced upward, raising the roll 11 until the Same comes incontact with the roll 3, which latter being in continuous motion willimpart its motion by frictional contact to the roll 11, which latter isused for the purpose of returning the unsheared iron to the operatorfrom the table 23. (Seen most clearly in Fig. 2.)

The frame 13 rests upon two slides 24, attached to the upright castings2 of the shears,

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and this frame is designed to be removed like a drawer in order to givethe operator access to the shearing-knives of the machine and to changeand adjust the same when necessary.

25 is a table suitably supported upon the upright castings 2, as seenbest in Figs. 1 and 2.

26 is arod orlever, mounted to slide through a suitable guide 27, itsouter end being provided with a hook or bent end 23, designed when therod or lever is pulled outward to engage over a pin or projection 29, aswill be readily understood from Fig. 2, extending from one of theextension-guards 30. The inner end of this rod or lever is pivotallyconnected with the shifter 3l, pivotally mounted at 32, as seen clearlyin Fig. 2, so as to be actuated by the outward movement of the rod orlever 26, and when said rod is released by the operator the shifter isautomatically returned by means of a spring 33, thus pushing theunsheared plate out upon the table 23, affording ample room for thetrimmings from the iron to slide down upon an apron 34,-(seen best inFig. 2,) which apron is supported in any suitable manner and extends inan inclined direction, as shown, so as to deliver the trimmings from theiron upon an endless carrier 35, as seen clearly in Fig. 2 and in topplan in Fig. 4, and by which carrier the said trimmings are carried outupon the floor in one pile ready for bundling into bales. This carrieris carried upon the rollers 36 on the shafts 37, supported in anysuitable manner, and upon an extended end of the outer shaft is a pulley38, preferably grooved, as seen in Fig. 1, and over which passes thebelt 39, which passes around the pulley 10 on the shaft 4 of the upperroll and from which latter pulley motion is imparted to the belt and tothe carrier.

The table 23 is attached to the separate frame 13 and is braced at itsouter end by suitable braces 40, one of which is seen in Fig. 2, andthis table is provided for the purpose of the iron lying thereon untilreturned to the operator by coming in contact with the rolls 3 and 11.

The knives of the shears are designed to be secured to the castings 2 atthe point 41 in Fig. 2, and the slides 19 are guided by suitable guides42, as indicated in Fig. 3.

The operation will be clearly understood from the foregoing descriptionwhen taken in connection with the annexed drawings, and

further detailed description thereof docs not seem necessary.

Modifications in detail may bc resorted to without departing from thespirit of the invention or sacrificing any of its advantages.

What I claim as new is- 1. The combination with the upper and lowerrolls, of an apron beneath the lower roll, a table for receiving theunsheared metal, and means for moving such metal so the trimmings maydrop onto'the said apron, as set forth. y

2. The combination with the upper and lower rolls, of an apron beneaththe lower roll, an endless carrier mounted to receive the trimmings fromsaid apron, a table to receive the uncut metal, and means for moving theuncut metal to allow the trimmings to fall upon said apron as set forth.

3. The combination with the upper and lower rolls, and a separateremovable frame in which the latter is carried, of a spring-actuatedshifter, means for actuating the same in one direction, means forvertically adjusting the lower roll, a table to receive the unshearedmetal, an apron to receive the trimmings, and an endless carrier forconveying away said trimmings, as set forth.

4. The combination with the upper roll and the vertically-adjustablelower roll, of an endless carrier, and means for operating the same fromthe upper roll, substantially as described.

5. The combination with the upper roll and the vertically-ad j ustablelower roll, of an endless carrier, means for operating the same from theupper roll, and an apron disposed to deposit trimmings upon saidcarrier, substantially as described.

G. The combination with the continuouslymoving upper roll, of avertically-adj ustable roll beneath the same, a treadle, slides formoving the lower roll, pivotal connections between the treadle andslides, a table supported by a separate frame in which the shaft of themovable roll works, and a shifter and means for operating the same,substantially as described. 1

In testimony whereof I affix my signature in presence of two witnesses.

SPENCER MAHAN.

Witnesses:

O. A. ARMFIELD, EMMA MAHAN.

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